Ventilating system.



UNITED STATES PATENT OFFICE.

anus I. sensor, wasmo'rol, DISTRICT OI comma.

mmarnto V 1b all whom it may concern! Be it known that I, Anus S.Jonsson, a citizen of the United States, residuqr at Washington, in theDistrict of Columbia, s bah invetnated and provemen in en: ystems,o w 1the following 18 a specification.

In late years the extensive budding of small houses and apartment houseswith 0 suites havin each a small cabinet kitchen, together wit the lowerrice of s has made a atlyincrea use of e ran e freedom from aahes and te avoidance of handling coal, ther with its great convenience for quicky bringing it into and puttiu it out of, nervi have ms s it a. veryesirable ad unct to ousekeeping. One veryserious objection to its use,however, is to be found in the great no, danger of viti ating the atmoshere 0 the room with isonous gases 0 and the ob ectionsble odors ofcooking. This is' especially true of the small kitchens of a merithouses where a limited amount of air s see allows the air to becomequickly vitiat Whenever, from the fouling of the stove, a \vronadjustment, or other disorders, an imper ect combustion of the modernwater gas occursi a rapid generation of carso bon monoxid fo lows, whosedeadly nature and insidious character have in some instances poisonedand killed the entire family. Such frequent instances of such fatalitieshave in late years as to have aroused ubho a iprehension and caused theormu tion 0 rigid municipal rules as to the installation and regulationof the gas The object of my invention is to cure this 4o evil entirelyand to make the air of a kitchen pure sanitary and to that end itconsists in a s mple system, involving com ratively inexpensive elementsof constru on especially related to the gas stove, but. having valuealso with other forms of heaters.

Figure 1 is,a vertical sectionalv elevation showing two gas ranges inrooms one'above the other cou led up with my ventilating devices, Fig. 8is a front elevation of the to same, on a smaller scale, Fig. 8 is an enlarged view in vertical section taken through the induction ventilstindevice, Fig. 4 is a vertical sectional view, owin a modification of thedevice as sp li to mason es chimneys already built an Fig. 6 is ahoriheelisatioa of Letters rum.

combustion zontal cross section of the same on line 5-6 of Fig. 4. Inthe drawing I have shown two gas ranges, A, A, in two kitchens arrangedone above the other, as is common in a rtment so houses, but there maybe more, or t may be only one. Asthey are..all equipped substantiallyalike it will only be necessary to liable to, generate carbon monoxidbecome foul-"or the flames im i a 10 relatively coolersurface, an bdischa into the air to r wi the arbon ioxid, disastrous an often fatalro- I suits follow. I therefore provide a special flue B which extendsfrom the lowest 1s ran out through the roof and re erably in a coveredventilator. This as performs a double function, in that it not onlycarries 03 the products of combustion, consisting chiefly of carbonmonoxid and carbon diosid, but it-also carries OI all the vapors, gases,and objectionable. odors arising from the cooking. For this purposeltlltll gas range has an outlet. ipe a, or a in communication with itscom ustion cham- 86 her, which pi is connected to the vertical iiue Bexten in through the roof. at n )oint in't is flue near the oeili ofouch itchen an o ning is formed whi is preferably cover-ct by a ratingor vent re;- 00 later 0. The walls of t e tiue B are perfectly straightand parallel, and between them at a point immediately opposite the ventrs later a vertical partition plate'b is arranger whose lower endextends at an O6 oblique angle to the wall bearing the reister andconnects with it at a nut below the star. The upper end'o his part:-tion p ate extends to s short distance above the register opening. Thepartition plate 6 is set between the two walls ofthe flue, closer to thebuck wull than it is to the register wall. In a four inch line thepreferred spacing would be about ll llltiltii from the partition lateto'tho back wall, and 21 inches from the partition plate to the registerwall. The pmmso of this will be more fully explained hereafter.

From the foregoing it Will b15061 that opposite each register opening inthe flue 110 Patented Feb. '8, 1e1o.- I "l lflufl M I'm! 0, I. lsrtalIO. mm I is a relatively narrow lpace d behind partition plate whichopens into the line above and below, and also a relatively do on abetween the partition plate the register, which is closed below butabove into the flue so that an updraft space d will induce an npdra ftin the m e by auction, causing the air in the room near the ceiling topass through the register opening into the space 4: and thence up theflue an out through the roof.

I will now explain more fully the physical principles invo ved in myinvention reference being bad more espccially to Fig. 3.

There are two classes of gaseous products to be taken care of from a gasstove. One is the direct roducts of the combustion of the fuel, whiciconsists chiefly of carbon di-.

. oxid and carbon monoxid, which are very v stove which, while notpoisonous 18, neverdoctor in creating a alu h cooking va elect, by

nous. The other is the vnporous exiialation proceeding from the cookingon the thelme, very objectionable, especially in apartment houses. InFig. ll the poisonous combustion gases are indicated by die heavy arrowsand the cooking vapors by the light arrows.

I will now describe the special function of thertition plate I) asregards its spacing, w ich forms the narrow throat. d and the relativelwider space a. r

' It is well nown that gases rise from convectionwith a velocityproportional to the temperature and as the combustion gases GO, and CO,are'quite hot and rise rapidly. they do not need so large a passagcwuv,and hence the small. passageway (1, while tlnmoist and cooler cookingvapors. moving more slowly, require the increased space 1-. Not onlythis, however, but the inclined bottom of plate 6 makes a taperingthreat for the hot combustion uses, which tapering throat crowds theminto the narrow S'Plltl' d, and gives a greatly accelerated velocity (0them and produces the effect of u strain owcrtul suction in space 0 thatetl'ectively draws out the P t will be seen from the foregoing, that myinvention notonly are the poisonous taken away, hut-they are made totheir greater velocity and suction energy,the useful work of relnovinthe unpleasant cookin vapors, thus t'id ding tinapartment of alob'ectionable odors.

As so far dercri the ventilating line is nude of aivanized iron, whichis four the w en partitions of a house or in a verti' l llot in amasonry wall. For a single gas r age, a flue 4X4 inches is sullicicnt.but

when'a number of emfloyed, the flue is superposed rnngcs are made of buproportionately wider.-

ou a e my invention for instullir. n1 ventilating system in a chimney llairem y built. in such case, I make a galvanized iron box I), oneportion of which is rectangular and tits in an opening in the brickwork,the rectangular when being made of'thc same de th as t e brick wall ofthe chimney. The ot or portion of the box is made tapering, extendingfrom the inner iact 'ol' the chimney fine at the lower end 1, to a point2 at the top about two-thirds the way across the chimney flue, leuvin rthe space a for the updraft of the smoke rom other stoves. This box isformed with a partition plate 6 (similar to b in Figs. 1 and 3). Itconnects at the bot-tom with the bottom of the box, but stops short ofthe top of the box so as to leave at. adequate s nice for the odors towas out. Into the inci Mix is tapped the outlet pipe a from the gasrange and a pipe 15 connnunicates with the top of the box and extends toa point above the roof. The to of the plate I) is lcaucd inwardly alittize. so as to give a slight convergence to the throat into which thepipe 0 delivers its gases to produce the more forceful induction andsuction efl'ect. On the. race of the box is placed the register Withthis urrun cmcnt it will be seen that the u nlrat't of lot, poisonousgases in pipe u will create an energetic su tion in the )0.\' 1).drawing out all objectionable odors from the upper part of the roomwhich, togcthel with the gases. pass on; through the pipe B. With thisarrangement the ventiating pipe it and the inner part of the box beingmthcd in the hot currents from-the snmkc pi )(S of other stoves, agreatly stimulntctl updraft is obtained and a more efl'ectivcventilation.

In carrying out my invention, I would have it nndcrslood that it may beapplied to-all heating appliances from which combustion uscs aredischarged and which in acoort'laiie with my system are made to removethe vupors of cooking by an inductive eti'cct.

When I employ the term gas stove I would have it understood that I meanto include not only the so called gas range. but also all hentct'soperated by gaseous fuel, such as gas heating stoves for warming 11room, or gas water heater for heating the water supply of the kitchenand bath.

l clniml. A ventilating system, cpmprising an apartment. a gas stovearranged in said apurtnu-nt, having a dischur e. pipe communicnting atomend with t Itcombustion chamber of the gas stove, an n irightventilating line connnuniy-uting with said disthe same depth sln'iw ninnuii l mr charge pipe and extended into communical on with the nterall. said vcultlutil-tg line having at u pmuLu-rus *iltil' ""lu. ceilingincd inner side of the "chamber next to said eoohi vapom and, impure airand a partitlll ate arranged in said tine opposite said openingconnected at the bottom to tho wall o the ue below the opening andforming a opening in communication with the tlne above said opening, to

cause the hot and poisonous combustion gases u of, the apartment an openapartment, a

apartment, having a dlaehar of the stove tuba removed from the apartmenta nd to carry away by induction the impure air of the apartment and thevaporona exhalations {run the stove.

2. A ventilating system, comprising an apartment, a M a stove arrangedin said apartment, having a dischar pipe communicating at one end with tie combustion chamber of the gas stove, an n right ventilating fluecommunicating wit said discharge iipe-and, extended into communicationwit the outer air, said ventilating flue having at a point in its, sidenear the ceiling ing for receiving cookinlg vapors and impure air and apart:- tion p ate arranged in said flue opposite and opemn connected atthe bottom to the hall '0 the no below the opening and forming a chambernext to said opening in communication with the flue above said opening,to cause the hot and poisonous combustion gases of the slow! to beremoved from the apartment and to carry away by induction the impure airof the apartment and the vaporous exhalations from the stove, saidrtition plate being spaced nearer to the ba 0 wall of the flue than itis to the wall containing the intake opening.

3...\ venti ating system, comprising an a stove arranged in said pipecommunicating at one end with t e combustion chamber of the gas stove,'an,up\righ t ven. tilating flue communicating wit said do;- eharge ipeand extended into communication wit the outer air, aaid ventilating linehaving at a int in its side near the ceil ng of the spa t an opening forreceiving cooking vapors and impure air and a pa'rttplate tion platearranged in said flue opposite lit," ienin connected at the bottom tothe wall 0 the ne below the opening and forming a chamber next to saidopeningjn commumeaa tion with the line above said opening, to

cause the hot and poisonous combustion gases ot' the stove to be removedfrom the apartment and to carry away by induction the impure air of theapartment and the vaporoua exhalatipns from the stove, aaid rtitionbeing spaced nearer to the bee wall of the line than it is to the wallcontainin the intake opening and .having its lower en inclined to form aconverging throat to stimn late the movement of the hot combustion gasesat their point of contact with the cool:- mg VIPOI'B- o ventilatin fluehavm an opening in the side provid with a gra ing and an induct on,partition late opposite aaid ted opening connec at its owar end 0 thewall containing the openi and free and disconnected at its upper en thelower end of said flue being formed as 3 box adapted to -to be seated inthe wall ol'a chimney and havin a pipe entering it been 8 oem '1.

. veniain ue avm ano l In the side provided with a gratsng a d a r i in-'luction partition late up to said opening connected at -itn ower and tothe wall containing the opani and free and disconnected at its upper enthe lower and of said flue bei formed as a adapted to be seated in iewall of a chimne havin a combustion-gas ipe Qflhl'lllfi it behim thertition and tie inner wa of. mid box being inclined to give it a floaterdimension at the top than it has at t bottom.-

In teatimon whereof I aftix my signature in presence 0 two witnesses.

. ALLEN S. JOHNSON.

Witnesses:

War. D. Lnaa Jr. F. A. Manon?

